Browsing by Author "Karadag, H"

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A Biochemical and Histochemical Study on the Activity of Acid Peptide Hydrolase in the Hypothalamus at Some Periods of Starvation and Refeeding After Starvation
(Mrs Pushpa Agarwal, 2005) Temur, A; Karadag, H; Askerov, FR; Dönmez, HH
This study was carried out to determine acid peptide hydrolyse activity in the homogenate of the lateral (feeding centre) and ventro-medial (satiety centre) nuclei of hypothalamus and fractions of the cells (mitochondria, nucleus, cystocoele) in those centres of rats fed after being starved for a five day period. One hundred and sixty Wistar Albino rats were used in this study. The rats were starved for periods of 1, 3, 5 and 7 d. The rats starved for 5 d were then allowed to cat for periods of 5, 15 and 30 d. The activity of acid peptide hydrolyse was biochemically determined in the feeding and satiety centres. In addition, histochemical study was also done in these centres. It was observed that the activity of acid peptide hydrolyse became closer to the levels of the control group in the satiety centre on the 30th d of access to food after a 5 d starvation. It was concluded that the feeding centre was more sensitive to starvation than the satiety centre and the satiety centre was restored faster than the feeding centre.
Dynamics of Changes of Monaminoxidase Contents in Some Hypothalamic Nuclei After Different Periods of Food Deprivation and Restoration of Food Regime
(Mrs Pushpa Agarwal, 2005) Temur, A; Askerov, FB; Kadimova, SO; Karadag, H
Monaminoxidase contents were determined by quantitative cytophotometric method in neuronal organization of lateral nucleus, ventromedial nucleus, paraventricular nucleus and supraoptic nucleus of hypothalamus after different periods of food deprivation and restoration of food regime. Monoaminergic system of laternal nucleus is probably necessary for keeping of informational and energetic potentials of the neuronal organizations of laternal nucleus and also for supporting of functional connections with all levels of food functional system. The neurotransmitter system of ventro-medical nucleus is necessary for gradual realization of energetic sources of the organism.
A Macroscopical Investigation of the Portal Veins of the Van Cat
(Czech Academy Agricultural Sciences, 2005) Ozudogru, Z; Soyguder, Z; Aksoy, G; Karadag, H
In this study veins that constituted the portal vein were investigated in eight adult Van cats. The portal vein of the Van cat was composed of five peripheral branches which supplied the abdominal organs and two intrahepatic branches at the hepatic porta. The peripheral branches were cranial mesenteric, splenic, gastroduodenal, right gastric and cystic veins. The cranial mesenteric vein was the largest vessel that joined to the portal vein, and was constituted by the caudal pancreaticoduodenal, ileal, ileocolic and jejunal veins. The splenic vein was formed by the left gastric, left gastroepiploic, pancreatic and short gastric veins. The gastroduodenal vein was formed by the cranial pancreaticoduodenal and right gastroepiploic veins. The right gastric vein separately joined to the portal vein. The caudal mesenteric vein joined to the portal vein either alone or by a common trunk receiving either the caudal pancreaticoduodenal vein or ileocolic vein. The caudal mesenteric vein also opened rarely into the splenic vein. Intrahepatic branches were the right branch which gave off the ramus caudatus and ramus dexter lateralis, and the left branch which gave off the ramus dexter medialis, ramus quadratus, ramus sinister lateralis and ramus sinister medialis.
Neuronal Nitric Oxide Synthase Immunoreactivity in Ependymal Cells During Early Postnatal Development
(Elsevier, 2004) Soygüder, Z; Karadag, H; Nazli, M
Neuronal nitric oxide synthase (nNOS) immunoreactivity was observed in ependymal cell layer of the central canal of spinal cord of neonatal rats (2-20 days old). Neuronal nitric oxide synthase immunoreactivity was present in postnatal day 2 and this immunoreactivity gradually disappeared by postnatal day 16. The progressive decrease in nNOS staining with the increasing postnatal age may suggest that nNOS staining paralleled the maturation of the central canal and may also suggest that nNOS activity plays a role in the development of the ependymal cells. (C) 2003 Elsevier B.V. All rights reserved.